1/** 2 * Checks if `value` is `undefined`. 3 * 4 * @static 5 * @since 0.1.0 6 * @memberOf _ 7 * @category Lang 8 * @param {*} value The value to check. 9 * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`. 10 * @example 11 * 12 * _.isUndefined(void 0); 13 * // => true 14 * 15 * _.isUndefined(null); 16 * // => false 17 */ 18function isUndefined(value) { 19 return value === undefined; 20} 21 22module.exports = isUndefined; 23